Kitscoty
Clear Sky Chart
History

This sumarizes the distribution of each different forecast outcome for the Kitscoty clear sky chart from 2005-11-05 to 2017-09-20.

This page is a summary of past forecasts. Even though it's based only on forecasts, some people use these pages as clue to a site's climate. But climate data based on actual observation should be preferred (if you can find it!).

Cloud, Transparency and Seeing forecasts are summarized individually. But because good observing conditions require a combination of minimum cloud cover, transparency and seeing, the individual forecast summaries can be difficult to interpret. The observing conditions section counts the combinations of conditions needed for common types of astronomical observation.

Observing Conditions

The following tables count the occurrence of the combinations of forecast and darkness conditions needed for different observations. Conditions are rated by by what percentage of the hours the observation would likely be attempted are usable.
Observation TypeMinimum conditions for hour to be usableOut of hours
Clear of CloudsTransparencySeeingSky Brightness
Planetary:50%(no limit)Average(no limit)Nighttime Hours
Deep Sky:70%Average(no limit)5.9Nighttime Hours
CCD Imaging:70%Below AveragePoor(no limit)Nighttime Hours

Percentages are of nighttime hours per month, or per year, when a particular observing conditions was met. Deep Sky percentages never exceed 50% because the moon is up half the time. Deep sky percentages are much lower for charts at high latitudes because of fewer dark hours in the summer.

Overall

PlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
Night
40%
15345
10%
46796
7%
15321
43%
15321
18%
33410

By Month

MonthDays of MonthPlanetaryData
Pts
Deep Sky
Max 60%
Data
Pts
Both Planetary and Deep Sky
Max 60%
Data
Pts
Either Planetary or Deep SkyData
Pts
CCD ImagingData
Pts
January1st to 15thNight
32%
895
7%
2685
3%
895
35%
895
14%
2067
January16th to endNight
30%
960
13%
2880
7%
960
36%
960
15%
2144
February1st to 15thNight
37%
712
7%
2371
5%
712
41%
712
14%
1760
February16th to endNight
41%
632
12%
2052
11%
632
45%
632
16%
1529
March1st to 15thNight
35%
720
12%
2094
8%
720
39%
720
18%
1563
March16th to endNight
38%
765
11%
2109
7%
765
41%
765
17%
1620
April1st to 15thNight
41%
539
13%
1683
8%
539
45%
539
20%
1172
April16th to endNight
40%
540
14%
1573
11%
540
43%
540
23%
1086
May1st to 15thNight
44%
469
8%
1370
7%
469
46%
469
24%
917
May16th to endNight
43%
374
1%
1309
1%
374
44%
374
16%
917
June1st to 15thNight
43%
360
0%
1170
0%
360
43%
360
16%
845
June16th to endNight
50%
360
0%
1134
0%
360
50%
360
20%
771
July1st to 15thNight
62%
340
0%
1190
0%
340
62%
340
26%
705
July16th to endNight
62%
376
3%
1239
3%
354
61%
354
28%
717
August1st to 15thNight
66%
447
8%
1387
7%
445
68%
445
29%
851
August16th to endNight
55%
573
16%
1719
12%
573
59%
573
33%
1035
September1st to 15thNight
55%
540
14%
1752
13%
540
57%
540
28%
1054
September16th to endNight
53%
675
19%
1883
12%
675
60%
675
37%
1124
October1st to 15thNight
40%
660
16%
1980
10%
660
47%
660
21%
1369
October16th to endNight
35%
773
15%
2317
9%
773
41%
773
20%
1617
November1st to 15thNight
31%
875
13%
2450
7%
875
36%
875
17%
1850
November16th to endNight
30%
900
10%
2649
5%
900
35%
900
13%
2051
December1st to 15thNight
28%
900
6%
2841
3%
900
30%
900
10%
2302
December16th to endNight
30%
960
10%
2959
4%
960
35%
960
11%
2344

Individual Forecasts

The length of each colored bar in the "occurrence of each Forecast" column is proportional to the number of times the chart forecast that color. The percentages are of the total number of hours per month, or per year, with a particular forecast. The colors as the same as those used in clear sky charts.

Note: Transparency probabilities are only counted for those hours that have 30% or less cloud cover. Seeing probabilities are only counted for those hours that have 80% or less cloud cover. If that's too tricky, try Observing Conditions instead.

Overall

Occurrence of each ForecastData
Points
Cloud CoverDay
12%9%47%6%35%5%6%8%30%
48071
Night
9%9%48%7%35%5%6%7%31%
46950
TransparencyDay
50%8%17%18%5%
47721
Night
49%7%15%19%6%
46804
SeeingDay
16%5%23%30%17%5%
6164
Night
14%5%27%34%16%2
15360

By Month

Percentage Cloud Cover NW (2006-)
Color Meanings:
Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 15thDay
10%12%6%9%9%5%5%5%5%7%21%
1253
16th to endDay
8%11%7%9%9%45%6%46%27%
1344
February1st to 15thDay
8%10%5%12%9%5%6%5%5%6%23%
1494
16th to endDay
8%14%8%11%10%47%5%6%6%16%
1422
March1st to 15thDay
9%13%5%9%7%48%5%5%7%21%
1866
16th to endDay
11%14%6%10%7%44446%25%
2114
April1st to 15thDay
13%11%5%6%6%35%5%5%6%29%
2263
16th to endDay
17%10%37%5%345%6%6%29%
2386
May1st to 15thDay
9%7%37%6%45%5%6%7%36%
2580
16th to endDay
17%7%35%6%35%5%6%8%30%
2802
June1st to 15thDay
17%8%37%6%37%5%7%7%25%
2787
16th to endDay
18%8%35%5%45%5%7%9%26%
2823
July1st to 15thDay
12%5%246%36%6%7%9%37%
2700
16th to endDay
9%5%25%5%35%6%7%9%37%
2846
August1st to 15thDay
13%5%25%5%35%5%5%9%38%
2565
16th to endDay
9%6%25%4245%6%9%42%
2483
September1st to 15thDay
13%6%25%5%34447%42%
2208
16th to endDay
11%5%245%2436%9%43%
1846
October1st to 15thDay
15%10%46%5%34447%34%
1650
16th to endDay
9%12%5%6%5%2436%8%34%
1543
November1st to 15thDay
11%11%6%7%6%35%5%5%8%28%
1408
16th to endDay
8%11%5%12%8%45%5%5%8%23%
1311
December1st to 15thDay
11%14%5%12%8%5%7%6%5%6%16%
1117
16th to endDay
5%12%6%13%9%5%7%7%6%8%17%
1260
January1st to 15thNight
8%11%5%9%8%5%7%6%6%6%22%
2685
16th to endNight
6%10%5%9%8%5%6%5%5%6%29%
2880
February1st to 15thNight
7%11%49%10%47%47%7%25%
2368
16th to endNight
6%10%5%12%8%46%46%8%25%
2052
March1st to 15thNight
8%9%49%7%46%6%6%7%28%
2094
16th to endNight
10%13%6%10%6%345%47%25%
2106
April1st to 15thNight
10%9%36%6%37%5%7%8%30%
1683
16th to endNight
13%11%36%5%23346%36%
1573
May1st to 15thNight
10%7%37%5%25%5%5%7%36%
1369
16th to endNight
15%9%26%6%346%6%7%30%
1309
June1st to 15thNight
12%9%47%7%46%5%6%7%29%
1170
16th to endNight
15%5%25%5%35%5%6%8%34%
1134
July1st to 15thNight
8%5%235%25%6%8%10%42%
1260
16th to endNight
8%324426%5%7%9%45%
1323
August1st to 15thNight
8%415%5%35%5%7%11%42%
1394
16th to endNight
6%5%25%5%235%7%9%46%
1719
September1st to 15thNight
12%5%235%2445%7%46%
1752
16th to endNight
9%42433335%9%51%
1883
October1st to 15thNight
11%11%45%5%3445%7%35%
1980
16th to endNight
10%10%47%5%245%6%8%33%
2317
November1st to 15thNight
14%10%48%7%345%5%6%28%
2450
16th to endNight
6%11%7%12%9%45%446%27%
2649
December1st to 15thNight
10%13%6%12%9%46%5%5%7%17%
2841
16th to endNight
412%6%11%12%5%8%5%6%6%20%
2959

Transparency (when cloud cover <= 30%)
Color Meanings:
Too cloudy to forecast Poor Below Average Average Above average Transparent
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 15thDay
60%6%14%12%5%
1253
16th to endDay
55%7%12%16%7%1
1344
February1st to 15thDay
58%7%14%14%4
1494
16th to endDay
66%7%8%11%5%
1422
March1st to 15thDay
59%8%16%12%2
1866
16th to endDay
59%6%13%14%5%
2115
April1st to 15thDay
53%7%14%16%6%1
2263
16th to endDay
53%6%14%17%5%1
2386
May1st to 15thDay
44%7%13%23%10%
2580
16th to endDay
49%7%15%17%9%
2807
June1st to 15thDay
54%8%14%16%4
2787
16th to endDay
52%9%17%17%3
2823
July1st to 15thDay
39%10%24%22%2
2541
16th to endDay
39%11%27%19%2
2667
August1st to 15thDay
41%10%24%20%2
2547
16th to endDay
36%9%24%24%4
2483
September1st to 15thDay
40%7%19%23%7%1
2208
16th to endDay
37%7%19%28%7%1
1846
October1st to 15thDay
50%5%16%23%3
1650
16th to endDay
46%7%19%20%5%
1543
November1st to 15thDay
52%9%13%18%5%
1408
16th to endDay
59%10%15%12%3
1311
December1st to 15thDay
64%8%10%14%1
1117
16th to endDay
61%8%12%12%4
1260
January1st to 15thNight
58%6%17%13%4
2685
16th to endNight
53%8%12%18%6%1
2880
February1st to 15thNight
55%6%15%14%6%
2379
16th to endNight
56%5%12%17%7%
2052
March1st to 15thNight
51%8%16%17%5%
2094
16th to endNight
57%5%13%17%6%
2109
April1st to 15thNight
47%7%16%18%9%
1683
16th to endNight
47%412%18%14%1
1573
May1st to 15thNight
44%6%10%24%13%1
1370
16th to endNight
49%8%11%21%6%2
1309
June1st to 15thNight
51%8%14%18%6%
1170
16th to endNight
43%10%20%19%5%
1134
July1st to 15thNight
32%11%24%24%6%
1190
16th to endNight
32%8%25%26%6%
1239
August1st to 15thNight
33%9%27%24%4
1387
16th to endNight
32%7%20%30%8%
1719
September1st to 15thNight
36%6%18%25%9%3
1752
16th to endNight
30%5%17%34%9%2
1883
October1st to 15thNight
46%7%14%23%8%
1980
16th to endNight
47%6%16%23%5%
2317
November1st to 15thNight
55%6%12%18%5%
2450
16th to endNight
58%7%15%13%4
2649
December1st to 15thNight
64%8%13%11%2
2841
16th to endNight
62%7%12%13%3
2959

Seeing (when cloud cover <= 80%)
Color Meanings:
Too cloudy to forecast Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5
MonthDays in MonthOccurrence of each ForecastData
Points
January1st to 15thDay
13%321%30%30%1
60
16th to endDay
17%9%23%29%14%6%
64
February1st to 15thDay
7%10%29%29%19%2
77
16th to endDay
22%6%25%27%16%2
81
March1st to 15thDay
21%434%28%8%2
225
16th to endDay
16%5%31%30%12%2
288
April1st to 15thDay
17%9%29%30%9%2
269
16th to endDay
27%6%17%31%14%2
316
May1st to 15thDay
12%8%23%32%16%5%
468
16th to endDay
17%7%18%29%17%9%
517
June1st to 15thDay
20%6%24%26%15%6%
495
16th to endDay
19%5%20%28%19%7%
495
July1st to 15thDay
13%218%34%24%6%
475
16th to endDay
12%323%33%22%5%
515
August1st to 15thDay
16%211%32%26%10%
445
16th to endDay
10%5%23%31%24%3
332
September1st to 15thDay
19%6%26%28%14%5%
315
16th to endDay
13%9%27%32%13%3
258
October1st to 15thDay
33%424%25%6%5%
90
16th to endDay
17%7%28%26%16%4
96
November1st to 15thDay
18%332%36%6%2
90
16th to endDay
13%8%24%27%13%13%
69
December1st to 15thDay
13%123%43%11%6%
60
16th to endDay
12%426%31%18%6%
64
January1st to 15thNight
13%5%31%34%12%1
900
16th to endNight
11%8%34%35%9%1
960
February1st to 15thNight
11%5%26%37%16%2
720
16th to endNight
10%326%36%17%6%
632
March1st to 15thNight
11%5%31%34%13%2
720
16th to endNight
15%5%25%32%17%3
765
April1st to 15thNight
14%329%34%15%2
539
16th to endNight
20%5%22%34%15%1
540
May1st to 15thNight
14%5%24%34%18%1
470
16th to endNight
19%422%27%21%4
375
June1st to 15thNight
18%319%33%20%3
360
16th to endNight
17%418%32%24%3
360
July1st to 15thNight
12%117%41%26%
340
16th to endNight
9%317%44%23%2
376
August1st to 15thNight
11%113%36%31%5%
447
16th to endNight
7%226%34%27%1
573
September1st to 15thNight
16%315%42%19%1
540
16th to endNight
10%426%38%18%1
675
October1st to 15thNight
18%427%30%16%3
660
16th to endNight
17%5%30%32%13%
773
November1st to 15thNight
18%5%32%29%11%2
875
16th to endNight
11%7%32%33%12%2
900
December1st to 15thNight
16%6%30%28%14%3
900
16th to endNight
9%5%30%34%15%4
960
Page generated at 2017-09-21 05:18:13. Version ac04

Copyright 2017 A. Danko


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